How to send trigger to external devices using labview

[labview.edu]

Hello, I need help in sending a trigger to external device using labview.

I have mounted strain-gauges on the beam and using labview to continously recording the strain values. Now I want to send the trigger (ttl/make/break) to outside device as soon as strain values goes over certain limit. I am new not labview and mostly using express vi's. Also I can start the strain acquisition when strain value goes over certain mark. But I am not sure on how to send the trigger pulse to the external device using labview. I am attaching the pic of some of my efforts.

System Information: Labview 8.5.1, SC-2345 connector block, SCC-SG01 Strain module, PCI-6251 DAQ Card and SCC-DO01 Digital Output Module.

Thanks,

Sine

[A_Person]

Hi labview.edu:

I noticed that you have essentially (if not the exact same question) posted in at least three other threads:

http://forums.ni.com/ni/board/message?board.id=250&message.id=46618

http://forums.ni.com/ni/board/message?board.id=170&message.id=387573

http://forums.ni.com/ni/board/message?board.id=170&message.id=387709

Please take the time to identify the most relevant forum to make your post in and only create one thread for a question.  These forums are actively monitored to help make sure that you get your questions answered so please be patient for responses.